public class pp3_3
 {
    public static void main(String[] args) {
        DecimalFormat decimalFormat = new DecimalFormat("000");
        DecimalFormat decimalFormat1 = new DecimalFormat("0000");
        Random random = new Random();

        int num = random.nextInt(8);
        int num1 = random.nextInt(8);
        int num2 = random.nextInt(8);
        int num3 = random.nextInt(656);
        int num4 = random.nextInt(10000);

        System.out.println("电话号码：" + num + num1 + num2 + "-" + decimalFormat.format(num3) + "-" + decimalFormat1.format(num4));
    }
}

